Weft-replenishing mechanism for looms.



N0. 696,657. I Patented Apr. i, |962.

J. M. SHAY.

WEFT REPLYENISHING MECHANISM FOR LODMS.

[Application l'ed Aug. 18, 1900.

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N6. 696,657. Y Patented Apr. l, |902.

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WEFT REPLENISHING MEGHANISM FOR LOOMS.

(Application led Aug. 16, 1900.)

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(No Model.)

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"9.696,657. Patented Apr. I', i902.

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WEFT'BEPLENISHING MECHANSM FOB LOUMS.

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N0. 696,657. Patented Apr. l, i902. Y J. M. SHAY. f

WEIITT REPLENISHING MECHANISM FDR LUOMS.

(Application med Aug. 1s, 1900.)

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Patented Apr. l, v|902.

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WEFT REPLENISHING MECHANISM FUR LUOMS.

(Application l'ed Aug. 16, 1900.)

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(Hu Model.)

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Patented Apr. I, |902.

J. M.- SHAY.

WEFT REPLENISHING MECHANiSM FOB LDMS.

(Application filed Aug. 16, 1900.1'

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(No Model.)

Patented Apr. l. |902. J. M. SHAY. WEFT/REPLENISHING MECHANISM F03LOOMS.

\Applicaton filed Aug. 16, 1900.) (No Model.;

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.1. M. SHAY. WEFT REPLENISHING MECHANISM FOR LOOMS.

Patented Apr. l', i90-2.`

(Application filed Aug. 16, 1900.3

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WEFT REELENISHING MECHANISM FDR LOOMS.

(Application led Aug'. 16, 190D.)

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(No Model.)

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No. 696,657. Patented Apr. l, |902.

J. M. SHAY.

WEFT REPLENISHING MECHANISM FOR LMS.

{Application filed Aug. 1B, 1900.)

(No Model.) i4 Sheets-Sheet I0.

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Patented Apr. I7 1902.

J. m. sHAv. WEFT REPLENISHING MEGHANiSM FOR LUUMS.

(Application filed Aug'. 16, 1900.)

(No Model.)

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1HE nofws PETERS no. mofufLmflmwAsHlNsTnu u c No. 696,657. J. M. sHAv.

WEET REPLENISHINGHECHANISM FOR LOOMS.

(Application led Aug. 16, 1900.)

Patented Apr. l, |902.

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. 'P'atented Apr. |902.

J. M. SHAY.

WEFT REPLENISHING MECHANISM FOR LUUMS.

Y (Application flad Aug. 16, 1900.) (No Model.)

. I4 Sheets-Sheet |4.

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s mams Pneus no maremma. wuumurcm n c UNITED STATES .IEREMIAH M. stuw,or FALL RIVER, MASSACHUSETTS, Assiettes or ONE"= HALF To A1B. PI-TKINMACHINERY COMPANY,.OF PROVIDENCE, RHODE ISLAND, lA CORPORATION orRHODEISLAND.

SCIFICATION forming part ci Letters Patent No. 696,657, dated April. 1,1902.

l Application filed August 16, 1900 Serial No. 27,045. (No model.) 5

To all whom it may concern:

p -Be it known that I, JEREMIAH M. SHAY, a

`ciiflnen of the United States, residing in Fall River, in the county ofBristol, in the State 5 of Messachnsetts,l have invented certain new`end useful Improvements in Weft-Replenshing Mechanism for Looms; and Ideclare the following to be a. specification thereof, reference beinghadv to the accompanying drew- Io ings.

.. me .aloof weaving as carried out with,

loomss 'nowcom monly constructed they objectiomhs been experienced thatwhen the weft lircitks'or the cop of the shuttle becomes I 5 exhaustedthe loom is automatically stopped through well-known connections andtheshuttie therein must be removed anda, fresh s lmttle supplied by thehand of the operator before the said loom can again be zo eration; l

The object of the present invention is 4the provision.` of Ineenscapable of perfect automatic operation for the placing in proper position of a. fresh Ashuttle when the weft breaks 25 or runs out, thesaid means. being also operated to'electthe discharge of the emptyshuttle when the fresh one is being supplied to the shuttle-box.

Myinvention consists of a receptacle for 3o receiving the yfresh shuttleand operating de vices therefor in connection with the moving parts of'the loom for automatically placing a, fresh shuttlein the shuttle-box etthe proper moment, and thus placing the fresh shuttle. 35 contained byit into proper position to be" struck by the picker-stick at its'nextthrow.

Itcon'sists,further,intlie peculiar-consiiruc`f` vtion and-arrangemedtfol theshuttlel-box and o shuttle is discharged. A,

" Iii-further conssts ofpsliesrs or cutters'vfor` automatically cuttinglthe weft or thread pro- 4'-jecting from theselvageof the clothafterthe.

.fresh-shuttle has' been thrown throng-h.. h

- "The deteils'f COilstruction relating A*to th ffvarious Operatingdevices' and-their arrngey `mentale ,constitutes materiel part; of thisin- .-ventiongs enabling me to accomplish the de- 5o sir'cdrc ult in :tsimple and practical manner.

ngnnechanism by which 'the empty Figure lis e. central verticalsectional View of the loom, showing .the position of the viirions partswhen the shuttle is in,y the box 'at the left-hand side of theloomend'thelay'has come to the end of its reartverdzmoton. Fig 5 5 L 2is a. central vertical sect p ewvgf'a. 0rtion of the loom, showing thppsitionogfho A various parts afterthe we fhhtgs'beenthrown i; throughthe shed of th'e werps the'shut tie has enteredthe vshuttle-box'end the..layf6ojlj l' has come tothe end of its forwardmotiomjff Fig. 3 is avertical sectional view of a portion of the loom, showing thepositionne;` the-vaf-j rions parts' after the weft. isb'roken oi'fhasbeen exhausted and the empty-.shuttle is about 'to be discharged, thelay haring Ytifeveled three-fourthsof its rearward motion.; 4f' is thesame sFig. v3 with the adliti n; ofthe shuttleejection'. mechanism to`remove the I empty shuttle 'from-the shuttle-box. Fig. 5 7o is a.vertical sectional view opposite to Fig'. 2. Fig: G is a. verticalsectional view opposite to.- Fig. `3, showing the position of thevarious "parte as the fresh shuttle is placed in the shuttle-box, thelay having reached-the end 7 of its rearward motion. Fig. 7 is afron'telcvation of the upper portion of the 1eft-hand end of the loom. Fig. 8is a. front elevation of the upper portion of the right-hand end of theloom'. Fig. 9 is a. top plan viewof the lefthand end of the loom. Fig.10.is a, top plan view of the right-hand end of theloom. Figs. 1 l, 12,and lshow in side elevation the shears or cutters and means foroperating the same. Figs. 14 and 15 show in side elevation a. modif fiedform of the shuttle-ejecting mechanism.; Fig. 16 s{e ..trans"verse.verticalsection ofthe 'f shuttIeI-reelvngpen and adjacent shuttleboxinposition when the shuttle hasbeen dis#4 charged into the pen. Fig. 17isa side elevation .of the 'switch-block. Figui-8 is a sectional View ofthe seinees seen on lineof Fig 317. Ifi'g," 319 isa.' top plan of .theshuttle in the, #voi yand thepnsher or; shlittle-transferieren. itsYAnormal position.` Fig. .2O is a, sectional View` fof thesem'eon line.e of Fig. 19. ',.Fig 21S vo. top plan'view o fthe saine parts esatteillust.,l treted inFig. 1'9, showing the preliminary in gulerpositon otthe shqttle incnilering th s lmttle`-bo'x1 Fig. 22is n front elevationof tllirgsame, Fig. 23 is a top plan of'the bunter "idi'eclianism foroperating the cutting de- '-Figs. l and 14 are omitted to vices as seenwhen the lay is at the limit ot' its backward movement. Fig. 24 is aView ofthe same as seen partly in elevation and partly in section online 1/ -y of Fig. 23. Fig. is a top plan of the same parts as seen whenthe la`y is at the end of its forward movement and the bunter is incontact with the lever- `arm of the mechanism operatingthe cuttingdevices. Figs. 26 and "7 are views of said mechanism as seen partly inelevation and partly in section on line w w of Fig. 25. Figs. 28 and 29are detail views. Figs. 23 to 29, inelusive, are drawn on au enlargedscale. Figs. 30, 3l, and 32 are detailviews,in an enlarged scale, ofcertain portions of said invention. In Figs. 2, 3, 4, and l5 the reedsshown in simplify said drawings. I

In the. drawings, l represents the frame of the loom, 2 is the arch, 3the harnesses, -t the lay, 5 the picker-stick, 6 the breast-beam,

' 7 the dagger, 8 the sand-roller, 9 the clotl1- roller, l() the gearfor the cloth-roller, and 11 the feed ratchet-gear, all of the usualconstruction and operating in the well-known manner. l

The shaft 12 has the cams 18 14 thereon, the former of which operatesthe picking-arm l5 and the latter of which operates the bent lever 16,as usual. The shaft l2 is operated in the direction of the arrow, Fig.1, through a suitable gea-r fastened to the opposite end of the shaftand meshing with the gear 17, which is fastened to-the crank-shaft 1S,Fig. 8.

A lling'detector, operative to show the presence or absence of thefilling or weft thread in the warp-shed, consists of the weftfork 19,which is pivotally mounted at 2O to .the sliding plate 2l, the latterbeing movable in suitable bearings upon the casting 22. Said eration,the weft or casting is fastened by bolts to the breast-beam 6. The endofthe weft-fork nearest the breast beam is hooked, as seen in Figs. 1and 2, and said hooked end is elevated at each throw of the shuttlewhenever its opposite endA is depressed by' the weft-thread, which hasbeen carried across. At each revolution of the shaft '1.2 the cam 14thereon imparts an oscillatingmovementto the bentlever 16,1nountcdpivotally at 225 on a bracket of the frame 1; but thel elevation of thehooked end of the weft-fork, as above explained, lifts said endA out ofthe path of motion l of the upper bent end of the leverlb'.

VVheu the loom is in opfilling thread is properly laid between the warpswith in the shed formed by the movements ofthe harnesses 3 as theshuttle is struck by the pickers 24v of the pickersticks 5 and thrownfrom side to side. of thelay.

The weft as the lay at comes forward lies in the path of the fingers ofthe weftfork, thus depressingr that end of the weft- `fork and raisingits hooked end, as already stated. These parts and the operation ofthese in the ordinary looms for plain weaving.

' My shuttle changing mechanism, which constitutes the principal featureof my invention, is set in operation by the engagement hooked end of theweft-fork 19. If the weftthread breaks or the weft in the shuttlebecomes exhausted, the shuttle enters the shuttlc-box, as usual; butwhen the lay L comes forward there is nothing to depress the rear end ofthe weftfork, as before, and when the lay 4 has nearly reached the limitof its forward motion the front hooked end of the weftfork is caught andengaged by the upper end of the bent lever 16 (see Fig. l) and drawsforward said weft-fork and the sliding plate 2l, to which 4it ispivoted. This forward movementof the sliding plate causes the front endthereof to bear forcibly'against and push the upper bent end ofthe lever25, which leand 2, thus partially rotating the said shaft 26. Saidrock-shaft is mounted in suitable tened to the breast-beam 6. On theopposite on by the screw 29 is the lever 30. At the bottom of the lever30 a link bar or rod 3l is loosely pivoted, as seen at S2, and at theopposite end of said link bar or rod 31 it is pivoted, as shown at 35i,to the end of a level arm 34, which is fastened to the axis of a switch36, which switch and lever-arm 34 move together. The switch 36 ismounted in suitable bearings in the block or casting 37, the latterbeing secured to the side of the loom. 'lhe block or piece 37 has on itsouter surfacea groove cut therein, (represented by the dotted lines 38and 39,) and it is also slotted to form a guide or way, as shown by thedotted line 40. (See Figs. 5 and 6.)` The face view of said switch-blockand a vertical section thereof are shown in Figs. 17 and 1S, in which38, 39', and 40 represent, respectively, the upper and lower edges ofsaid groove and the bottom of said slot. tVhen the switch 36 is iu theposition shown in Fig. 5, its under side is continuous with the upperedge ot' the groove in said block 37; but when said switch is in theposition shown in Fig. 6 its end is in contact with the lower edgrI SSSot' said groove. The rocking of the shaft 26 caused by the movement ofthe le"er 25, resulting from the the consequent sliding of the plate21,'as alieady described, moves the switch 36 from its inoperativenormal position (shown in Fig. 5) toits operative position. (Shown inFig. 6.)

Upon a rock-shaft ell, which extends along the lay from side to side andwhich is m^unt ed in suitable bearings 42 and 4t2-l, Figs. 'i and bf, isfastened a lever-arm 44, whose lower end is provided with afriction-roller -l-.S and whose opposite end is formed into asectorparts are all old and well known, being used.

of the bent upper end of the lever 16 with the bearings 27 28, Figs. 9and 10, which are fas' engagement ofthe upper end ofthe lever 16' withthe hooked end of the wei'tfork 19 and' Sel ver is fastened to .therock-shaft 26, Figs. 1

end of the rocleshat't 26 and fastened there- A ico TIO

uerlarm 44.

The shuttle-boxes used in my loom constitute the principal and most im-Yeeegesv shapes gem: 46. The levier-m1111144 is usually inthe positionillustrated in Fig. 5,A and as the lay moves back and lforth thefrictiom roller 45 of said lever-arm 44, projecting into the groove 3839, is confined thereto in its `movement from end to end thereof; butwhen the switch 36 has been moved by the rockshaft 26 and itsconnections tothe position shown in Fig. 6 said relier 45 as the laymoves backwardruns up along the upper Isurface `of the switch' 36 to andalong the bottom `40 of the slot of the block or piece 37. The

portant part of my invention. At each'end of thelay is a shuttle-box,designated in the Edrawngs as 47 and constructed as follows:4 IIt'h'asa' front and back side and one closed' end, but has no bottom. vWhenit'is in its usual horizontalposition, as in Fig. 1, it rests on `thetop surface or race-plate 48 of thev lay;

but when it is turned up into its perpendic' ular position, 'as in Figs.3 and 32, its bottomy Each ot said shuttle-boxes 47 hasis open.

'I at itsl ends earpieces 49 andf50, by which it is loosely androtatably mounted on the rod 51,L the latter being mounted loosely inbrackl ets 52, bolted or fastened to the front ot the lay 4. Theearpiece 49 of each shuttle-borv 47 isprovided with a sector-shaped gear53. I 'On the rock-shaft 41, at the left-hand end thereof, is fastened asector-shaped gear 54. Lillie gear 46 of the lever-arm 44 meshes withthe gear 53 of the right-hand shuttle-box 47, and the gear 54 on theopposite end ot the rock-shaft 41 'meshes with the gear 53 of tholeft-hand shuttle-box 47. When by the rocking ofthe shaft 26, caused bythe engagement and movement together ot' the weftforlc 19 and the upperend of the bent `lever 16 and the, connections of said roclcshaft 26,the switch 36`is moved into the position shown in'Fig. 6, thefriction-roller 45 ot the leverarm 44 runs up said switch into. theupper slot of the block 37, thus changing the angular direction of thelever-arm 44, and thereby moving the gear 46 of said lever-arm, and asimilar oscillatory movement is imparted to the gear @4, because both-the gears 46 and 54l are fastened to the shaft 41, which is thusrocked. These gears 46 and 54 so moving impart motion `to the gears 53of the shuttleboxes 47 Thus said.'shuttleboxes begin to turn up when thelay has performed nearly one-fourth of its backward movement, and bythetime when the-lay has completed its backward movement the-shuttle-boxes47 have comeinto the position shown in Fig. 3. Behind the right-handshuttle-box is a stationary reservoir or case 55 to hold the sparishuttles, which are to be supplied one by onev improved to theshuttle-boxes as the operating-shuttle becomes empty or.: its.weft-thread is ,h oken. This reservoir or case 55 is wholly independentof the lay, being sufpported'by braces56'Y from the arch 2. v It has' anopen flaring top f il Y and at its front and rear at the bottom an j iopen space exceeding somewhat in 'width the I Width of the shuttle. Inthis reservoir spare shuttles are packed', each supplied with asuitablekquantity'of weft-thread, and there. isla verticalopening in thefront ofthe case to enable the operator` to see the number of spare shuttles inthe reservoir. On the front of ythis case or'reservoir 55 a leverforrocker arm 57 is pivoted ait 5S, the, shorter arm of this lever beinga weight or counterpoise.

The upper'end of the lever 57. is bent, as shown at 59 in Fig. 5,and-the loose end of each of the weft-threads from the spare' shuttlesin .the reservoir is carried to and wound around said bent end ofthe'lever, as seen irl-Figs. 5 and 10. On the sides of the case 55insidethe same andsat the bottom, are placedtwo open'- ings or yieldingdetente, as seen at 55 in Fig. 19. On therock-shaft 4l is also fasteneda 'lever-arm 60, Figs. 5 and 6, and at its end is pivotally connected alink-bar 6l, slotted at its end. On 4the binder-shaft 62'and fastenedthereto is the lever-arm 63, from which'projects .the bent or hooked arm64, whose end the lever 67, (which is pivotally mounted at 68 to-abracket on the'loom-vframe.) I This occurs when the lay has traveledabout three-v fourths of vits backward motion,'and its furthery rearwardmovement causes the arm 66 to push and move said lever 67. The lever 67atfits top is pivotally connected at 69 with' a link-bar 70, to which isfastened at 7l a pusher or shuttle-transferrer 72. The forward end ofthe link-bar 70 is supported by a bracket 73, as shown. The reservoir 55has a rearward extension 74, opening into the lower portion thereof andreceiving the pusher 7 2. The rearward movement of the lay 4, in theswords of which vthe binder-shaft 62 is mounted, causes the end of thelever-arm 6640 push and move the lower end of the lever 67, whichmovement of the lever 67 by the link-bar 70 moves the pusher 72 from thepositionshown AIIC! in Fig. 5 tothe position shown in Fig. 6. `The'result of` this movement of the pushern72 is that the lowest shuttle inthe reservoir 55 (shown in Fig: 5) is moved out of the resbrvoir-intothe shuttlerbox, as illustrated in ,Fig 6. The springs 55' in saidreservoir (see .rngorvibrations of the loom when operating;

in'remo'ving'said shuttle from the reservoir intothe shuttle-box. Onihewithdrawal of theepusher 72 by force of the spring 76 the lowest shuttleat that ytime in the-reservoir ation, as seen in Fig. 19.

falls by its weighi to the bottom of the reserlVoir, to'be pushed intothe shuttle-box when-` ever the pusher is operated again, as abovedescribed, said s pring-detents in the meanwhile pressing on the twopointed ends of said shuttle to hold 'it in place awaiting said oper-The binder-spring 65,Which by this movement has been stretched, as seenin Fig. 6, is by the forward movement of the lay 4 relieved fromtension, and the arm 6 resumes its former position, as in Fig. 5.

The mechanism for removing the empty shuttle from the left-handshuttle-box is as follows: The left-hand end of the binder-shaft 62 isbent, as seen at 77 in Figs. l and 14:, and upon this bent end abinder-linger 7S is fastened. 'lhe usual function of said bindernger 7Sis to pressagainst the swell or binder 79 of the shuttle-box 47, asillustrated in Fig. 1; but when the binder-shaft G2 has been rocked, asvalready explained, by the lever of the rock-shaft 4l andthe intermediateconnections`6l, (i2, 63, and G-Lt said binder-finger comes into theposition shown in Figs. 4 and 6. Upon the arch f3,v Fig. 4, is fastenedthel receiving-pan SO. This pan is also supported by the brace Si.,extending from the frame ot' the loom. A bracket 82,fastene'd upon theside of the pan. S0, serves to support the vertical rock-shaft 83. Abent lever S-t is secured to the vertical rock-shaft 83 at the bottomthereof and is provided at one end with a head and at the other it isconnected with a spring S5. An arm 86 is fastened'to the top of saidvertical rock-shaft, Figs. 4 and 9. The end of said arm 86 is slotted,as seen -at 87. A rod 88 has a head, through which a screw 89 passesinto the slot S7 oi' the arm SU. Said rod S8 is supported by andlongitudinally movable in the bearings 90 and 91, fastened to theguideplate 92, which partially covers the ban 80. A push-plate orshuttle-transferrer 9B is secured upon 4the end of the sliding rod S8and has a bent extension 9i, as shown in hg. 9,

which is slotted at its end, as shown in Fig l. The pan SO is so placedas to be above the top of the left-hand shuttle-box when the latter isin'its normal position and the lay has reached the limit of its rearwardmovement. At that. time the bot om of the pan 8O extends somewhat overthe top of the shuttlebox and partially covers the same. The front` topedge of the shuttle bos'v slightly projeci s inwardly. Fastened to theback of the shuttle-box is the usual spring, as in Fig. 22, whichcontinually presses the swell or binder 79. 'lhus'as the shuttle-boA sturned from its horizontal to its perpendicular position, asalreadyspeciiied, the shuttle therein is held in said shuttle-box by thepressure of the binder 79 on said shuttle. A lever 95 is pivotallymounted on the back of thc shuttie-box, as seen in Fig. 4, and has itsshort end behind or under the free end of the binder A-79v and its" longend extending at an angle. An arm 9G'is fastened te the side of the panand projects angular-ly upward. A door or shutter 97 is hinged insuitable bearings on the inside of the shuttle-box and above the path ofthe travel of the shuttle therein. This door. or shutter is held in ahorizontal position even with the top of the shuttle-box by the spring 98, which is fastened to the top ot' the gear by the rivet 99 at one end,the

other end sliding loosely in the strap 100 on the door or shutter, asshown in Fig. 9. A spring 191 is fastened to the front of theshuttlc-box and has a projection 102, which passes under the front ofthe shuttle-box and below the raceway 4 of the lay when the shuttleboxis in its normal position. A mortise 4b is made in the raceway toreceive said projection 1Q?. These parts are shown in detail in theenlarged views, Figs. 30, 31, and 32.

This mechanism at the left-hand end of the loom is operated as follows:lVhen the shuttlc-box is turned up into the perpendicplar position andthe lay 4 has reached the position shown in Fig. 4, the rearwardly-bentend 77 of the binder-shaft 6 2 is depressed, as be-v fore described,thus moving the binder-finger 7S backward. Then as the lay continues itsbackward movement the top end ofthe binderfnger 78 comes in contact withthe front end IOC) or head of the lever' Se and forces back said 4leveragainst the tension of the spring 85,. This movement of the lever 8-1partially rotates the vertical rock-shaft 823, and this turning of therock-shaft S3 swings the slotted arm 8G, and so draws the sliding rod88. vAs the lay comes near the end of its backward motion the slidingrod 88, drawn as just described, brings th'e push-plate 93 in contactwith the empty shuttle and forces it into the recel ving-pan 80. As theshuttle-box is raised to the-position shown in Fig. 4 the end of thelong arm of the lever 95 comes in contact with the arm 96 ofthe pan 80,thus depressing said end of the lever 95 and raising its short end. Thisshort end of the lever in rising lifts the free end of the binder 79 andrelieves the shuttle from the pressure `thereof. The shuttle is thenfree to be thrown into the pan S0 by the action of the sliding rod SSand its push-plate 93, as above cxplained.

Sometimes during the operation of the lloom the speed of the main shaft,which operates the loom, will vary'. If the speed has considerablyincreased, the throw of the picker-stick will be more forcible, andconsequently the shuttle will enter the shuttlebox at a greatervelocity, and striking the picker-head in the box, which it so enters,is liable to rebound one or two inches. At such time if the shuttle isabout to be ejected from the shuttle-box into the receiving-pan it willIIO I 2 of the right-hand shuttle-box is crowded into the shuttle-boxfirst, as illustrated in Figs. 21 and 22, its ysharp end JForcing itsway to overcome the binding pressure of the swell, and this continuesuntil the projection 107 of the pusher '7:3 comes into contact with the{iange 100 of the reservoir 55. of the ,link-bar 7() then pushes forwardthe outer end of said pusher 72 until its projection 10S strikes againstthe liange '110 of the reservoir 55, thus completing the proper transferof the fresh shuttle from the reservoir to the shuttle-box, asillustrated in Fig. 19. In this manner the shuttle acts like a wedge toforce the binder or swell of the shuttle-box to allow the entrance ofthe shuttle into the shuttle-box. (SeeFig. 22.) Theshuttle-boxes whenrotated to their vertical position stand up in frontof the path of thepicker and above the saine.

The loose ends of theweft-threads from the several shuttles in thereservoir are fastened by winding them around the bent upper end 50 ofthe lever 57 (ijn the front of the reservoir, Aas shown in Fgs. 5, 8,and 10. Therefore whenever a fresh shuttle has been supplied to theright-handl shuttle-box and said shuttle has been thrown by the pickerfrom said box there is a portion of its weft which extends from the end59 of'the lever 57 into, through, and out of the said shuttle-box.

This weft-thread I eut off atthe right-hand' selvage of the cloth by thefollowing mech` ansm; On the rock-shaft 41 is a collar-cam 111, securedin place by the screw-112 and having four notches on the edge thereof,one vshown at 113 and one of the .same size andshapediametrieallyoppositconthe saineside, one shown at 11.4 and oneofthe same size and shape diainetrcallyopposite on the same side. (SeeFigs. 10, 23, and 25.) The notch 114 and that diametrlcally oppositeare,rhoW- ever, much smaller and more shallow than the notch 113. Aratchet-cam 115 is loosely mounted on the shaft 4,1 and has twodialnet'- rically oppositgarxns 11G 117 extending therefrom, fourratchet-teeth 118 ninety degrees apart, and tw'o diametrieally oppositecam projections 11). A pawl or catch 120is pivoted at 121 on a bracketbeneath the lay, Figs. 11, 12,

.13, 23, 24, 25, 26, and 27, and has a downward projection 122, to whicha spiral spring 123 is attached. `A ratchet-arm 124 is looselymountedontheroek-shaft41. Aspiralspring 25 surrounds said shaftv and hasone end bearing againsta fixed colla-r, as shown at 126 and the otherend bearing against the ratchet-arm 124. A bunter 127 isfastened toanifwojeets from the breast-beam (i. A pawl 12S i'spivoted at 12%) tothe side of the ratchet- `arm l2-l, (see Figs. 10, 23, 24, 25, 26, and27,) which is kept in its normal position by the spring 130. A lever 131is also mounted on the pivot 121, and the spring 123 is fastenedthereto, which extends from the downward projection 122. ',lhe lever 181is pivotally count-,cieli at one cud, as shown at 132, tothe The furtheradvance j link 133, and said link is pivotally connected at 134 to thelower handle of a pair of shears 135. The upper handle of the shears ispivoted at 136 to a fixed support on the back of the lay. A spiralspringr 137 is fastenedv at its upper end to the lever 131 and atitslower end to a fixed support. A bracket 13S projects from the lay, asshown in Fig. 11. The operation of this cutting device is as follows:When the weft-fork 19 has been engaged, as hereinbefore described, bythe upper end of the bent lever 16, the rock-shaft 41, through theintermediate connections, is partially rotated, and the collar-cam 111,fixed on said shaft, turns with it. As the cam projection 119 of theratchet-earn 115 is engaged in the notch 113 of the fixed collar-cam 111(being held therein by the pressure of the spiral spring 125 on therock-shaft 4l) this partial rotation of the fixed collar 111communicates its motion to the ratchet-cam 115 and moves it from theposition shown in Fig. 11 to the position shown in' Fig. 12, whereuponthe holding-pawl 120 by the force ofthe spring 123 engages the end ofthe 116, as seen in Fig. 12, and prevents any return movement of the cam115 when the roekshaft rotates back toits former position. (See alsoFigs. 23 to 2f), inclusive.) IThe n as the ylay moves forwardthero'ck-shaft 4l, partially rotating as already explained, turns the.eollar-eani 111 with it and forcesisidewise the ratchet-cam 115 bycausing the projection 119 of said cam 115 to move out of the notch 113of the fixed cam 111. This lateral movement ment to the'adjacentloosely-mounted'ratchet arm 124, and thereby. compresses the spiralspring 125, which surrounds the Arock-shaft` 41. This lateral movementof the ratchetarm 124 on the shaft 41 brings said ratchetmoves the pawl128, pivoted hereon, which cam 115 and movesthe projecting arm 116 ofthe ratchet-cam 115 gives a lateral movecatches, the nearest tooth 118of the ratchet? projectingarmA IOO IIO

thereof one-fourth of a revolution from the position shown insolid linesin Fig. 1.1 to the position shown in dotted lines in Fig. 12, andthereby the sharp. edge of the cam projection 119 of the ratchet-cam.115 is brought vopposite to the shallow notch 114 of the .cam 111 andis seated therein by the force of the spiral spring 125. .'lhen as thelaymoves backward the ratchet-arm 124 descends to its former position,being forced down again by the torsional press u re of the spiral spring125, whose end is inserted and secured in the side of the ratchet-arm124. When the lay moves forward the next time, the shuttle hasencollar-v tered the left-hand shuttle-box and lcarried` 11S of the\ratchct-'ea|n 115, rotates said

